Fenecon Home 3-Phase Sensor FEH040 without Current Transformer

Accurate energy monitoring for three-phase systems starts with precise measurement. The FENECON Home 3-Phase Sensor FEH040 delivers Class 1 accuracy for active energy (IEC 62053-21), ensuring your FENECON Home energy storage system sees exactly what your home consumes and produces.

Overview

The FEH040 is a DIN-rail mounted, three-phase energy sensor designed to integrate seamlessly with FENECON Home 10, Home 20, and Home 30 storage systems. It measures voltage directly (3x 230/400V AC) and current via external current transformers (CTs) with 333mV, 1A, or 5A secondary outputs. Data is transmitted over RS485 using Modbus RTU, providing real-time visibility into active power, reactive power, apparent power, voltage, current, frequency, power factor, and energy import/export.

What stands out

• Class 1 energy accuracy for reliable billing and optimization
• Flexible CT compatibility: works with 333mV, 1A, or 5A secondary CTs
• Compact 2-module DIN rail housing for easy installation in distribution boards
• Robust operating temperature range from -25°C to +55°C
• Headless design with no display – data is read directly by the FENECON system

Technical details

• Measurement type: 3-phase energy sensor
• Voltage range: 3x 230/400V AC (L-N / L-L)
• Current input: via external CTs (not included)
• CT secondary compatibility: 333mV, 1A, or 5A
• Communication: RS485, Modbus RTU
• Accuracy: Class 1 (IEC 62053-21) for active energy
• Mounting: DIN rail, 2 TE (modules)
• Operating temperature: -25°C to +55°C
• Protection class: IP20
• Power supply: internal, from measured voltage
• Housing: plastic, screw terminals
• Measured parameters: active/reactive/apparent power, voltage, current, frequency, power factor, energy import/export

Our verdict

A professional-grade sensor that gives your FENECON Home system the accurate, real-time data it needs for smart energy management. Its wide CT compatibility and rugged design make it a dependable choice for installers.